- You will need to make "broken rulers" out of cardboard or tag board for this activity.
- Students may be good at measuring objects using regular rulers, where they can start with zero, but using broken rulers requires them to do more arithmetic.
- Have a set of objects that your kids will need to measure. You may want to make a data sheet, where they may record their results.
- After all of your kids have a chance to go to this center, have a discussion with them about how they used the broken rulers to measure. They should be able to tell you about the methods they used.